Sony E-mount

Common card · No. 330576

The E-mount is a lens mount designed by Sony for their NEX ("New E-mount eXperience") and ILCE series of camcorders and mirrorless cameras. The E-mount supplements Sony's α mount, allowing the company to develop more compact imaging devices while maintaining vignetting with 35mm sensors. E-mount achieves this by: Minimising mechanical complexity, removing mechanical aperture and focus drive. Shortening the flange focal distance to 18 mm compared with earlier offerings from Sony which used 44.5 mm. Reducing the radius of the flange. Relying on software to correct vignetting The short flange focal distance prohibits the use of an optical viewfinder, as a mirror box mechanism cannot be included in this reduced distance. Therefore, all E-mount cameras use an electronic viewfinder.

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